Apparently the most detailed economic assessment to date on the effects of climate change has been completed, and a preview of the findings have been released. The findings are that, one, global leaders need to deal with climate change or face, perhaps, the biggest recession in the world yet. Two, if the $15 trillion investment in new energy sources required over the next fifteen years to move beyond our current energy systems is actually invested, it might bail out the economies of the countries who reap the benefits of the research. Seems like a no brainer to me, but I'm certainly not in charge of how we spend our research money here in the US.